jkatz.dk DNS records

🖥️ Nameservers2 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
courtney.ns.cloudflare.com	108.162.194.130 162.159.38.130 172.64.34.130 2606:4700:50::a29f:2682 2803:f800:50::6ca2:c282 2a06:98c1:50::ac40:2282	courtney.ns.cloudflare.com courtney.ns.cloudflare.com courtney.ns.cloudflare.com courtney.ns.cloudflare.com courtney.ns.cloudflare.com courtney.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rommy.ns.cloudflare.com	108.162.195.20 162.159.44.20 172.64.35.20 2606:4700:58::a29f:2c14 2803:f800:50::6ca2:c314 2a06:98c1:50::ac40:2314	rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.44.17	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.192.208	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records3 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.zoho.eu	185.230.212.166 185.230.212.166 185.230.212.166	mx2.zoho.eu mx3.zoho.eu mx.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V
20	300s	mx2.zoho.eu	185.230.212.166 185.230.212.166 185.230.212.166	mx2.zoho.eu mx3.zoho.eu mx.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V
50	300s	mx3.zoho.eu	185.230.212.166 185.230.212.166 185.230.212.166	mx2.zoho.eu mx3.zoho.eu mx.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V

🔷 AAAA Records (IPv6)2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2c11	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:c0d0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 51ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.44.17,172.67.192.208 ech=AEX+DQBBJQAgACC/21wWhhzN7DcxzcgpF0SCUfz8jkyCIBDXqFdQkkfjdgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2c11,2606:4700:3033::ac43:c0d0

📝 TXT Records1 records 169ms

TXT Record
v=spf1 include:zoho.eu ~all

✉️ SPF

Policy	Record (jkatz.dk)
~all (soft fail)	v=spf1 include:zoho.eu ~all

📨 DMARC

Policy	Record (_dmarc.jkatz.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:jok@jkatz.dk; ruf=mailto:jok@jkatz.dk; sp=quarantine; adkim=r; aspf=r

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.jkatz.dk	BAMKXOrk7e-8oTYst7-l_JRCco5UbiG5YPho8gm-5Z0
TXT	_acme-challenge.jkatz.dk	fF9XlWXrumMAYvnKzL0Kjh1sf-7SgKFGO_aCnX9NkQw

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC107ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2413761114
Primary NS (MNAME)	courtney.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

38ms

A

35ms

MX

34ms

AAAA

39ms

TXT

169ms

CAA

54ms

HTTPS

51ms

TLSA

328ms

SOA

0ms

MTA-STS

65ms

DNSSEC

107ms

SRV

76ms

Total

1114ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-04 08:54:19	1114ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-29 22:16:46	1877ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-27 20:18:54	1081ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-23 13:54:54	1693ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-06 08:34:37	2218ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-17 13:51:47	2877ms	2 NS 2 A 3 MX	🔓 Insecure	View